bump NDK APP_PLATFORM to android-16 (#19830)
bump NDK APP_PLATFORM to android-16 (#19830)

Summary:
This PR will bump NDK APP_PLATFORM to android-16. Below is the excerpt from NDK documentation

> This variable contains the minimum Android platform version you want to support. For example, a value of android-15 specifies that your library uses APIs that are not available below Android 4.0.3 (API level 15) and can't be used on devices running a lower platform version. For a complete list of platform names and corresponding Android system images, see Android NDK Native APIs.
Closes https://github.com/facebook/react-native/pull/19830

Differential Revision: D8620017

Pulled By: hramos

fbshipit-source-id: 0b5578f130938e3ddae03fb855784193183243cf

facebook/react-native,facebook/react-native,janicduplessis/react-native,hoangpham95/react-native,pandiaraj44/react-native,facebook/react-native,exponent/react-native,hoangpham95/react-native,janicduplessis/react-native,myntra/react-native,facebook/react-native,facebook/react-native,pandiaraj44/react-native,exponentjs/react-native,exponentjs/react-native,pandiaraj44/react-native,exponentjs/react-native,pandiaraj44/react-native,arthuralee/react-native,exponentjs/react-native,pandiaraj44/react-native,hoangpham95/react-native,arthuralee/react-native,myntra/react-native,javache/react-native,janicduplessis/react-native,pandiaraj44/react-native,myntra/react-native,pandiaraj44/react-native,exponentjs/react-native,javache/react-native,janicduplessis/react-native,arthuralee/react-native,myntra/react-native,exponent/react-native,hammerandchisel/react-native,hammerandchisel/react-native,janicduplessis/react-native,exponent/react-native,pandiaraj44/react-native,janicduplessis/react-native,facebook/react-native,hammerandchisel/react-native,hammerandchisel/react-native,exponent/react-native,facebook/react-native,exponent/react-native,myntra/react-native,exponentjs/react-native,hammerandchisel/react-native,janicduplessis/react-native,myntra/react-native,hoangpham95/react-native,javache/react-native,javache/react-native,javache/react-native,facebook/react-native,hoangpham95/react-native,javache/react-native,exponent/react-native,exponentjs/react-native,hoangpham95/react-native,myntra/react-native,facebook/react-native,arthuralee/react-native,javache/react-native,hoangpham95/react-native,janicduplessis/react-native,hammerandchisel/react-native,hammerandchisel/react-native,hoangpham95/react-native,arthuralee/react-native,javache/react-native,hammerandchisel/react-native,exponent/react-native,myntra/react-native,exponentjs/react-native,javache/react-native,myntra/react-native,exponent/react-native